Double-slip railway-switch



',J. C. MQCK;

DOUBLE SLIP RAILWAY SWITCH.

APPLICATION FILED MAR, 22, 1920.

Scww LS \Qbk 36343 W W W Patented May 10,1921.

UNHTED STATES PATENT OFFICE.

JAMES c. MOGK, or DETROIT, MICHIGAN.

DOUBLE-SLIP RAILWAY-SWITCH.

Specification of Let ers Patent.

Patented May 10, 1921.

. Application filed March 22, 1920. Serial No. 367,788.

,T 0 allwiwmit may concern: v,

Be it known that 1, Lim ts C. Mock, a citizenof the United States, and residing at Detroit in the county of Wayne and State of Michigan, have invented a new and Iming rods and switch bars which may be used with rails and switch points ofdouble slip switches,which rails and switch points are insulated from each other electrlcally 1n pairs.

This invention consists in the details of construction illustrated in the accompanying drawing and particularly pointed out in the claims.

In the accompanying drawing, Figure l is a plan of a double slip switch embodying my improvements. Fig. 2 is a side elevation of a switch bar. Fig. 3 is a plan of the insulating joint between the two parts of an intermediate bar. Fig. 4 is a front elevation and Fig. 5a side elevation of a front switch point lug. Fig.6 is a side elevation of a back switch point lug. Fig. 7 is a section on the line 77 of Fig. 2. Fig. 8 is a front elevation of a rigid dog. Fig. 9 is a plan and Fig. 10 a side elevation of a connection between a half barand an end bar.

Similar reference characters refer to like parts throughout the several views.

In the drawings, the rails 1, 2, 3 and 4 are shown resting on bearing plates 5 on the cross-ties 6, being prevented from separating by the chairs 7 which are secured to the bearing plates by the bolts 8. Bars 9 maybe bolted to the outerbearing plates to secure and maintain proper alinement between them. The switch points 11, 12, 13 and 14 are movable into and out of contact with the adjacent rails 1, 2, 3 and 4 respectively by means of the operating rod 16. These two rods connect to the back and front switch bars respectively, either to the sides or to the top thereof.

The two switch bars are substantially alike and are each made up of the two end bars 18 and 19, the two intermediate half bars 20 and 21 and the two splice plates 22. The intermediate half bars 20 andv 21 are connected to the end bars 18 and 19 b means of bolts 23 and are connected to eac other by means of the bolts 24 which pass through the insulatingbushing 25 and press the splice plates 22 against the insulating fiber plates 26. The two intermediate half bars20 and 21 are therefore operatively connected by electric insulations.

Secured to the front ends of the several switch points by means of the bolts 27 are the front lugs 28, 29,30 and 31 which are formed with flanges 33 to fit against the ends of the switch points and sockets 34. The lugs 28 and 31 for the outside switch points 11 and 14 have their sockets 34 fitting overthe hubs 35 on the rigiddogs 36 secured to the end bars 18 and 19 by means of the bolts 37 (Fig. 8). The'lugs 29 and 30 for the inside points 12 and13 have their sockets 34 fitting over the hubs 39 of the adjustable dogs 40 which have up-turned outer ends 42 and are connected to the up-turned inner ends 41 of the end bars 18 and 19 by means of the bolts 43. The nuts 44 permit these adjustable dogs to be moved endwise to carry the switch points 12 and 13 toward and from the adjacent rails to insure proper contact. The lugs are all rotatable on the hubs 39 and are held in position by the bolts 44. Perfect adjustment is thus secured. The lockingrod 16 passes through the flange 46 of the clip 47 which is secured to the end bar 18 by means'of bolts 48, and nuts 49 on this rod provide proper adjustment.

The back or operating switch bar is substantially similar to the front bar, excepting that the clip 51 is preferably secured to the lower side of the end bar 18 by means of bolts 52. The four lugs 53 are alike and are secured to the switch points by means of bolts 54. These lugs are formed with sockets to'receive the hubs 35 and 3901i therigid dogs 36 and'adjustable dogs 40 respectively. In this switch bar, the intermediate half bars are the same as those shown in Fig. 3, and are mechanically connected together by the splice plates 22 and electrically insulated from each other by the insulating plates 26 and bushings 25.

In Figs. 9 and 10, I have shown well known spring cotters 55 extending through the up-turned ends 41 and 42 of the end bar 19 and of the adjustable dog 40 respectively, for the purpose of preventing the adjusting nuts 44 and the head 56 of the bolt 43 from turning. These cotters can be easily removed to permit adjustment of the switch P01 1?? and then can be r p ced.- T1 53 devices may be employed at all other points where adjusting bolts and nuts are used.

In this construction, the rails 1 and 2 together with the switch points 11 and 12 are insulated from the rails 3 and 4 and the switch points 13 and 14. As the rails 1 and 3 and switch points 11 and 13 belong to one track while the rails 2 and 4 and the switch points 12 and 1e belong to another track, the rails of each track and the switch points cooperating therewith are insulated from each other respectively. In other words, a double slip switch is provided with a single operating mechanism and a single locking mechanism and the two rails of each track remain insulated from each other and the two switch points of each track also remain insulated from each other at all times. The slip switches are old and well known, but the single operating mechanism for a double switch of this character which permits of the desired insulation is novel.

The details and proportions of the various parts may all be changed by those skilled in the art without departing from the spirit 01 my invention as set forth in the following claims.

I claim 1. In a slip switch, the combination of a plurality of pairs of rails and a switch point for each rail, and a switch bar for moving a switch point of each pair of rails into contact with the adjacent rail and simultaneously moving the other switch point of each pair of rails away from the adjacent rail, said bar being formed of two mechanically connected parts electrically insulated from each other.

2. In a slip switch, the combination of a plurality of pairs of rails and a switch point for each rail, a switch bar for moving a. switch point of each pair of rails into contact with the adjacent rail and simultaneously moving the other switch point of each pair of rails away from the adjacent rail, said bar being formed of two mechanically connected parts electrically insulated from each other, and pivoted connections between the switch points and the switch bar.

3. In a slip switch, the combination with the rails of two tracks, a section of one the rails of two tracks, a section of one rail of each track being between the two rails of the other track, a switch point for each rail, a switch bar and connections between the switch bar and the four switch points whereby the switch bar may move the switch points'into and out of operative position, said bar being formed of two mechanically connected parts electrically insulated from each other between the two connections which attach the switch bar to the two inside switch points.

5. In a slip switch, the combination with the rails of two tracks, a section of one rail of each track being between the two rails or the other track, a switch point for each rail, a switch bar, a dog for each outer switch point rigid with the switch bar and a lug connecting the same to the two outer switch points, dogs and lugs connected to the two inner switch points, and means to adjustably connect the last named dogs to the switch bar.

6. In a two track switch mechanism, the combination of two pairs of rails and a switch point for each rail, a switch bar for operating the four switch points, said bar comprising a plurality of parts and insulation between them so that the switch points of each track may be electrically insulated.

7. In a two track switch mechanism, the combination of two pairs of rails and a switch point for each rail, an operating bar and a locking bar connected to all said switch points, said bars embodying insulating material to separate electrically the two switch points of each air of rails.

JEKMES C. MOCK. 

